@article{552f18d96aa34f1abc52ba8fa08e5b2a,
title = "Age of onset in bipolar and unipolar illness with and without delusions or hallucinations",
abstract = "This study examined the differential association of unipolar and bipolar major affective disorder and the presence or absence of delusions or hallucinations with a number of age of onset indices. Earlier age of onset tended to be found in bipolar patients and patients with psychotic features. When the joint effect of polarity and psychotic features were examined, polarity was more highly related to various age of onset indices than psychotic features. However, these features were uniquely associated with a subset of indices beyond that accounted for by bipolarity. The implications of these findings are discussed.",
author = "Blumenthal, {Richard L.} and Egeland, {Janice A.} and Lawrence Sharpe and John Nee and Jean Endicott",
note = "Funding Information: From the Research Assessment and Training Department, New York State Psychiatric Institute. New York, and the Amish Study, North Research Division, Department of Psychiatry, University of Miami School of Medicine, Hershey, PA. Supported in part by National Institute of Mental Health Grants Nos. 28287 and 30906, the University of Miami School of Medicine, and the New York State Department of Mental Hygiene. Address reprint requests to Richard L. Blumenthal. Ph.D., New York State Psychiatric Institute, Research Assessment and Training Department, 722 W 168th St, New York, NY 10032. o 1987 by Grune & Stratton, Inc. OOIO-440X~87/2806-0011%03.00/0",
year = "1987",
doi = "10.1016/0010-440X(87)90021-6",
language = "English (US)",
volume = "28",
pages = "547--554",
journal = "Comprehensive Psychiatry",
issn = "0010-440X",
publisher = "W.B. Saunders Ltd",
number = "6",
}